I just put [stargate*] into the search box, and after submitting it the search terms were expanded to:

[stargate] or [stargate-sg1] or [stargate-atlantis] or [stargate-universe] or [stargate-movie]

Likewise, [star-trek*] becomes:

[star-trek] or [star-trek-tng] or [star-trek-voyager] or [star-trek-ds9] or [star-trek-tos] or [star-trek-enterprise] or [star-trek-into-darkness] or [star-trek-2009] or [star-trek-data] or [star-trek-q] or [star-trek-tas] or [star-trek-the-doctor] or [star-trek-ph2] or [star-trek-judgment-rites] or [star-trek-iii] or [star-trek-countdown]